Vault-light, skylight, or floor-light construction



c. H LAW. VAULT LIGHT, SKYLIGHT, 0R FLOOR LIGHT CONSTRUCTION,

APPLICATION FILED SEPT. 27, I919. 1,353,919.

Patented Sept. 28, 1920.-

2 SHEETS-SHEET I.

c. H. LAW. VAULT LIGHT, SKYLIGHT,-0R FLOOR LIGHT CONSTRUCTION.

APPLICATION FILED SEPT. 2% 1919 I UNITED STATES, PATENT OFFICE.

CHARLES HENRY LAW, OF FOREST HILL, NEW YORK, ASSIGNOR TO AMERICAN BAB-LOGK GQMPALNY, OF NEW YORK, N. Y., A CORPORATION OF' PENNSYLVANIA.

VAULT-LIGHT, SKYLIGHT, GR FLOOR-LIGHT CONSTRUCTION.

Specification of Letters Patent.

Patented Sept. 28, 1920.

'App1icati0n filed September 27, 1919. Serial No. 326,886.

To all whom it mag concern:

Be it known that I, CHARLES HENRY LAW, a citizen of the UnitedStates,residing at Forest Hill, L. I., in" the county of Queens, State of NewYork,have invented a new and useful Vault-Light, Skylight,-or F loor-Light'Construction, of which the following is a specification.

It has heretofore been proposed in the patent to Mulford, No. 1,021,548,dated March 26th, 1912, and in, the patent to Mulford, No. 1,072,147,dated Sept. 2, 1913, in constructing devices of this character, to firstmake a preformed slab of reinforced concrete, place it over the openingto' be covered, then place in position the lenses, and lastly embeddingthe lenses in concrete. The advantages and utility of such constructionis clearly set forth in the patents aforesaid, and such construction hasbeen found to have marked advantage over the prior methods employed.

My present invention comprehends a novel construction and arrangement ofa skylight,-vaultlight and floor-light construction of the same type asthe patents above referred to and is formed of a preformed slab ofreinforced concrete having lens receiving openings. The slab 1 iscompleted at the factory and then shipped to its desti nation, at whichplace it is placed in posi tion over the openingv to be covered. Thelenses are secured in position over the lens receiving opening, and anupper layer of concreteis formed to embed the lenses and a novelconstruction andarrangement of reinforcing members, which latter are oftruss formation, and extend above the preformed slab, in order to servealso as bonding or anchoring elements in the finished construction. A.stronger and better reinforcement is provided and a better bond betweenthe different layersof concrete which are united as a homogeneous massafter the operation is completed.

My invention further comprehends a novel construction of an expansionjoint formed between sectional portions of the construction. 1

It further comprehends a novel construction. of a skylight, vaultlightand floor light wherein any lenses which have. become broken or injuredmay be readily removed 'structionwithout injury tothe surrounding bodyof reinforced concrete.

Other novel features of advantage and construction will hereinafter moreclearly appear in the detailed description of the in: vention and theappended claims.

For the purpose of illustrating my invention, I have shown in theaccompanying drawings, forms thereof which are at present preferred byme, since they will give in practice satisfactory and reliable results.It is to be understood, however, that the various instrumentalities ofwhich my invention consists can be variously arranged and organized andthat my invention is not limited to the precise arrangement andorganization of these instrumentalities as herein shown and described.

Figure 1 represents in perspective, a preformed slab of reinforcedconcrete having lens-receiving openings, and forming part of theskylight, vaultlight and fioor-light embodying my invention.

Fig. 2 represents a sectional view, showin more clearly the expansionjoint.

Fig. 3 represents, in section, a portion of the construction, showing areplaceable lens in position.

Fig. 4 represents, in section, a skylight, vaultlight and floor lightembodying my invention.

Fig. 5 represents, in sectional elevation,

a portion of the construction showing more the construction.

Similar numerals of reference indicate corresponding parts in thefigures.

Referring to the drawings 1 designates a pre-formed slab of reinforcedconcrete which is provided with lens receiving openings 2. Embedded inthe concreteof the slab on opposite sides of the openings 2, are met-a1reinforcements which consist of the lower deformed rods 3, the

upper deformed rods 1, which latter are in truss formation and extendabove the surface of the reinforced concrete slab as indicated at 5 inorder'to-also serve as bon ing elements. V 7 I also employ onopposltesides ofthe lens receiving openings, reinforcing rods 6 which outmyinvention in practice,as a reinforced concrete skylight construction fora-train' shed roof,- .i'n which 7 designates the bulb angles on whichthe old concretef8 is supported. 'Securedto the angles 7 in any desiredmanner are the angle beams 9 having their upper laterally extendingflanges 10 forming asupport for the preformed con- :crete slab 1, seenin Fig. 1, and the detailed construction of which has already been ex-.plained. The ends of the preformed slab 1 are placed in proper positionover the open- I ing to be covered and rest on the insulation 11, whichmay be of any suitable material, suchas for example, felt. Thelower'angle beam 9 is secured to it in any desired manner on angle beam12, the function -o.f which is -toiprevent anyslipping of the skylightslab.

This angle beam 12 extends preferably in parallel relation with and isspaced from the preformed slab 1. The lenses 13 are next placedinzposition over the lens receiving openings 2.-'-Th ese lenses have theupper portion of their side walls unobstructed and" convergingasindicated at '14, and these converging walls at their lower ends mergeinto a curved or rounded bead 15 which latter nie'rgesinto an outwardlyextending flange 16 which rests on the upper face of the preformed slabl. The lenses are provided at their bottom with the downward extensions17, which are adapted to fit into the lens receiving openings J Y Thedownwardly converging side walls 14 of a lens, are provided with amalleable coating 18. After the lenses have been placed in position,concrete 19 is poured on to surround the lenses and embed the bondingportions'5 of the truss reinforcing bars 4. Between the upper face ofthe. old concrete 8 and the new concrete 19, an elastic cement joint 20is formed preferably of angle formation, as is shown in Figs. 4C and 5.Between the old concrete 8 and the new concrete 19 atthe upper end ofthe construction, a wedge shaped slot 21 is formed, in the lower portionof which is packed oakum 22 or-material of similar properties, 1

andthe slot above the oakum is filled with elastic'cement 23 in order toform 'an expansion joint.

' The-new concrete slab 24: on the concourse roof as well as theskylight construction is supported on a structural beam 25, see Fig. 2,and between the slab 24 and the skylight construction, an expansionjolnt 26 is formed corresponding in construction to that seen at theupper end of the construction in Fig; 4, and a detailed description ofthe expansion .joint '26 would involve needless repetition.

as irrdicated at 28, while itscentral. portion 7 is deflecteddownwardlyas at 29, to extend betweenthe space formed by the juxtaposedslabs 1. A .slothaving downwardlyconverging walls 30 terminating at thecentral 2 portion of the expansion plate is formed in the upper layer ofconcrete, and this. slot is filled with elastic cement 31.130 form anexpansion joint. 1 In Fig. 3, I'have shown a type lens 32 which hasreplaced a brokenlens 12. The replaceable lens 32 is less in width thana .lens 12 and is similar'in construction, except that instead of havingan outwardly curved wall portion forming a bead as .1 1, it isprovidedwith a semi-cylindric groove 33, and the concrete opposite the groove 33is removed to form a groove 34, semi-cylindric in cross section so thatthe cement placed in said. grooves Will form a water tight cementlockjoint 352 which extends to the upper face of the preformed slab 1,as indicated at 36. 7

When I have referred to concrete, it is to be understood that thisincludes any cemeninstance, shown and described a preferred embodimentthereof which will give in practice satisfactory and reliable'results,it is to be understoodQthat such embodimentis susceptible of'modificationin various particulars'without departing from the spirit orscope of the invention or sacrificing any of its advantages; 1 1

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. A skylight, vault .light, or floor light construction comprising aconcrete slab having lens receiving-openings and having embedded 1n 1ton opposite sides of the openings, a longitudinallyv extending upper anda lower bar, the upper bar being in truss and positioned above them,lenses covering the lens receiving openings, and a layer of concretesurrounding the lenses and embedding the bonding portions of thetruss-reinforcing bars.

2. In a skylight, vault light or floor light construction, having oldconcrete bearings, the combination With the old concrete and itsbearings, of a concrete slab having lensreceiving openings and havingembedded in it reinforcing bars of truss formation extending betweenadjacent openings above the slab to form truss bonding portions,

lenses covering the openings, an angle beam spaced from the slab andcarried by the bearings to prevent slipping of the slab and concreteembedding the angle beam, the

truss bonding portions and surrounding the lenses.

3. A skylight, vault light, or floor light construction comprising aconcrete slab having lens receiving openings and having embedded in iton opposite sides of the openings, a. longitudinally extending upper anda lower bar, the upper bar being in truss formation so that it has trussportions extending above the face of the slab to form bonding portionsreinforcing bars embedded in the slab, extending at an angle to theother reinforcing bars and positioned above them, lenses covering thelens receiving openings, and a layerof concrete surrounding thelensessand embedding the bonding portions of the truss-reinforcing bars.

CHARLES HENRY LAW.

